<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>js字符串和数组对象</title>
</head>
<body>
	
</body>

<script>
	
	//字符串大小写转换
	str='linux is very much';
	str2=str.toUpperCase();
	alert(str2);
</script>
</html>